From: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
To: Christian Zigotzky <chzigotzky@xenosoft.de>,
linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
kvm@vger.kernel.org,
"debian-powerpc@lists.debian.org"
<debian-powerpc@lists.debian.org>
Cc: "R.T.Dickinson" <rtd2@xtra.co.nz>,
hypexed@yahoo.com.au, mad skateman <madskateman@gmail.com>,
Christian Zigotzky <info@xenosoft.de>
Subject: Re: KVM-PR no longer works when compiled with new GCC compilers
Date: Fri, 24 Apr 2026 17:48:37 +0200 [thread overview]
Message-ID: <d9ad0cd6fa640f23c396778bce2aa322e40e7e88.camel@physik.fu-berlin.de> (raw)
In-Reply-To: <a584b7a1-fc25-a475-099a-634159b6ffe8@xenosoft.de>
On Fri, 2026-04-24 at 16:47 +0200, Christian Zigotzky wrote:
> I compiled it with "mtune=power4" today but without any success.
>
> Error messages:
>
> [ 800.274759] Couldn't emulate instruction 0x00000000 (op 0 xop 0)
> [ 800.274767] kvmppc_exit_pr_progint: emulation at 100 failed (00000000)
What exactly are you running inside the KVM? 0x00000000 doesn't seem like
a valid instruction and a quick Google research reveals that this triggers
a SIGLL trap.
Adrian
--
.''`. John Paul Adrian Glaubitz
: :' : Debian Developer
`. `' Physicist
`- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
next prev parent reply other threads:[~2026-04-24 15:48 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-02 6:37 KVM-PR no longer works when compiled with new GCC compilers Christian Zigotzky
2025-10-02 6:52 ` Christophe Leroy
2026-04-23 16:50 ` Christian Zigotzky
2026-04-23 17:35 ` John Paul Adrian Glaubitz
2026-04-23 17:46 ` Christian Zigotzky
2026-04-24 14:47 ` Christian Zigotzky
2026-04-24 15:48 ` John Paul Adrian Glaubitz [this message]
2026-04-25 2:50 ` Segher Boessenkool
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=d9ad0cd6fa640f23c396778bce2aa322e40e7e88.camel@physik.fu-berlin.de \
--to=glaubitz@physik.fu-berlin.de \
--cc=chzigotzky@xenosoft.de \
--cc=debian-powerpc@lists.debian.org \
--cc=hypexed@yahoo.com.au \
--cc=info@xenosoft.de \
--cc=kvm@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=madskateman@gmail.com \
--cc=rtd2@xtra.co.nz \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox